public static TransformParameters Parse(string transform)
{
TransformParameters parameters = new TransformParameters();
string[] transform_parts = transform.Split(new Char[] {' '}, StringSplitOptions.RemoveEmptyEntries);
parameters.transform_name = transform_parts[0];
long iWord = 1;
while(iWord < transform_parts.Length)
{
if (transform_parts[iWord].ToLower() == "vp")
{
++iWord;
parameters.variableParameters = ReadParameterValues(transform_parts, iWord);
iWord += parameters.variableParameters.Length+1;
}
else if (transform_parts[iWord].ToLower() == "fp")
{
++iWord;
parameters.fixedParameters = ReadParameterValues(transform_parts, iWord);
iWord += parameters.fixedParameters.Length+1;
}
else
{
iWord++;
}
}
return parameters;
}
private static ReferencePointBasedTransform ParsePolyTransform(TransformParameters transform, TransformInfo info)
{
// string filename = System.IO.Path.GetFileName(parts[1]);
// string[] fileparts = filename.Split(new char[] { '.' }, StringSplitOptions.RemoveEmptyEntries);
// this.Number = System.Convert.ToInt32(fileparts[1]);
//Figure out tile size
int ImageWidth = System.Convert.ToInt32(transform.fixedParameters[2]) * 2;
int ImageHeight = System.Convert.ToInt32(transform.fixedParameters[3]) * 2;
//The poly transform parameters dictate the center of the image
double x = transform.fixedParameters[0] - (ImageWidth / 2.0);
double y = transform.fixedParameters[1] - (ImageHeight / 2.0);
GridVector2 ctrlBotLeft = new GridVector2(x, y);
GridVector2 ctrlBotRight = new GridVector2(x + ImageWidth, y);
GridVector2 ctrlTopLeft = new GridVector2(x, y + ImageHeight);
GridVector2 ctrlTopRight = new GridVector2(x + ImageWidth, y + ImageHeight);
GridVector2 mapBotLeft = new GridVector2(0, 0);
GridVector2 mapBotRight = new GridVector2(ImageWidth, 0);
GridVector2 mapTopLeft = new GridVector2(0, ImageHeight);
GridVector2 mapTopRight = new GridVector2(ImageWidth, ImageHeight);
MappingGridVector2 BotLeft = new MappingGridVector2(ctrlBotLeft, mapBotLeft);
MappingGridVector2 BotRight = new MappingGridVector2(ctrlBotRight, mapBotRight);
MappingGridVector2 TopLeft = new MappingGridVector2(ctrlTopLeft, mapTopLeft);
MappingGridVector2 TopRight = new MappingGridVector2(ctrlTopRight, mapTopRight);
MappingGridVector2[] MapPoints = new MappingGridVector2[] { BotLeft, BotRight, TopLeft, TopRight };
return new GridTransform(MapPoints, new GridRectangle(0, ImageWidth, 0, ImageHeight), 2, 2, info);
}
private static ReferencePointBasedTransform ParseTranslateTransform(TransformParameters transform, TransformInfo info)
{
if (transform == null)
throw new ArgumentNullException("transform");
//string filename = System.IO.Path.GetFileName(parts[1]);
//Figure out tile size if we haven't already
int ImageWidth = System.Convert.ToInt32(transform.fixedParameters[2]) * 2;
int ImageHeight = System.Convert.ToInt32(transform.fixedParameters[3]) * 2;
double x = transform.variableParameters[0];
double y = transform.variableParameters[1];
GridVector2 ctrlBotLeft = new GridVector2(x, y);
GridVector2 ctrlBotRight = new GridVector2(x + ImageWidth, y);
GridVector2 ctrlTopLeft = new GridVector2(x, y + ImageHeight);
GridVector2 ctrlTopRight = new GridVector2(x + ImageWidth, y + ImageHeight);
GridVector2 mapBotLeft = new GridVector2(0, 0);
GridVector2 mapBotRight = new GridVector2(ImageWidth, 0);
GridVector2 mapTopLeft = new GridVector2(0, ImageHeight);
GridVector2 mapTopRight = new GridVector2(ImageWidth, ImageHeight);
MappingGridVector2 BotLeft = new MappingGridVector2(ctrlBotLeft, mapBotLeft);
MappingGridVector2 BotRight = new MappingGridVector2(ctrlBotRight, mapBotRight);
MappingGridVector2 TopLeft = new MappingGridVector2(ctrlTopLeft, mapTopLeft);
MappingGridVector2 TopRight = new MappingGridVector2(ctrlTopRight, mapTopRight);
MappingGridVector2[] mapPoints = new MappingGridVector2[] { BotLeft, BotRight, TopLeft, TopRight };
return new GridTransform(mapPoints, new GridRectangle(0, ImageWidth, 0, ImageHeight), 2, 2, info);
}
private static MeshTransform ParseMeshTransform(TransformParameters transform, TransformInfo info, double PixelSpacing= 1.0 )
{
int NumVariableParameters = transform.variableParameters.Length;
Debug.Assert(NumVariableParameters % 4 == 0);
int NumPoints = NumVariableParameters / 4;
double Left = System.Convert.ToInt32(transform.fixedParameters[3] * PixelSpacing);
double Bottom = System.Convert.ToInt32(transform.fixedParameters[4] * PixelSpacing);
double ImageWidth = System.Convert.ToInt32(transform.fixedParameters[5] * PixelSpacing);
double ImageHeight = System.Convert.ToInt32(transform.fixedParameters[6] * PixelSpacing);
MappingGridVector2[] Points = new MappingGridVector2[NumPoints];
for (int iP = 0; iP < NumPoints; iP++)
{
int iOffset = (iP * 4);
GridVector2 Mapped = new GridVector2((transform.variableParameters[iOffset] * ImageWidth) + Left,
(transform.variableParameters[iOffset+1] * ImageHeight) + Bottom);
GridVector2 Control = new GridVector2(transform.variableParameters[iOffset+2] * PixelSpacing,
transform.variableParameters[iOffset+3] * PixelSpacing);
Points[iP] = new MappingGridVector2(Control, Mapped);
}
return new MeshTransform(Points, info);
}
private static GridTransform ParseGridTransform(TransformParameters transform, double PixelSpacing, TransformInfo info)
{
//string filename = System.IO.Path.GetFileName(parts[1]);
//string[] fileparts = filename.Split(new char[] { '.' }, StringSplitOptions.RemoveEmptyEntries);
//this.Number = System.Convert.ToInt32(fileparts[1]);
int gridWidth = System.Convert.ToInt32(transform.fixedParameters[2] + 1.0);
int gridHeight = System.Convert.ToInt32(transform.fixedParameters[1] + 1.0);
int ImageWidth = System.Convert.ToInt32(transform.fixedParameters[5] * PixelSpacing);
int ImageHeight = System.Convert.ToInt32(transform.fixedParameters[6] * PixelSpacing);
GridRectangle MappedBounds = new GridRectangle(0, ImageWidth, 0, ImageHeight);
int NumPts = transform.variableParameters.Length / 2;
GridVector2[] Points = new GridVector2[NumPts];
// verticies = new VertexPositionNormalTexture[numPts];
Double minX = Double.MaxValue;
Double minY = Double.MaxValue;
Double maxX = Double.MinValue;
Double maxY = Double.MinValue;
//Every number in the array is seperated by an empty space in the array
for (int i = 0; i < NumPts; i++)
{
int iPoint = (i * 2);
Double x = transform.variableParameters[iPoint] * PixelSpacing;
Double y = transform.variableParameters[iPoint+1] * PixelSpacing;
Points[i] = new GridVector2(x, y);
//Trace.WriteLine(x.ToString() + ", " + y.ToString(), "Geometry");
if (x < minX)
minX = x;
if (x > maxX)
maxX = x;
if (y < minY)
minY = y;
if (y > maxY)
maxY = y;
}
// List<int> indicies = new List<int>();
MappingGridVector2[] mapList = new MappingGridVector2[gridHeight * gridWidth];
List<int> triangleIndicies = new List<int>();
for (int y = 0; y < gridHeight; y++)
{
for (int x = 0; x < gridWidth; x++)
{
int i = x + (y * gridWidth);
GridVector2 mapPoint = GridTransform.CoordinateFromGridPos(x, y, gridWidth, gridHeight, ImageWidth,ImageHeight);
GridVector2 ctrlPoint = Points[i];
MappingGridVector2 gridPoint = new MappingGridVector2(ctrlPoint, mapPoint);
mapList[i] = gridPoint;
}
}
for (int y = 0; y < gridHeight - 1; y++)
{
for (int x = 0; x < gridWidth - 1; x++)
{
int botLeft = x + (y * gridWidth);
int botRight = (x + 1) + (y * gridWidth);
int topLeft = x + ((y + 1) * gridWidth);
int topRight = (x + 1) + ((y + 1) * gridWidth);
int[] triangles = new int[] { botLeft, botRight, topLeft, botRight, topRight, topLeft };
triangleIndicies.AddRange(triangles);
}
}
return new GridTransform(mapList, MappedBounds, gridWidth, gridHeight, info);
}
private static GridTransform ParseGridTransform(TransformParameters transform, TransformInfo info)
{
return ParseGridTransform(transform, 1, info);
}
private static GridTransform ParseGridTransform(TransformParameters transform,
StosTransformInfo info,
float pixelSpacing,
int iFixedParameters,
int iVariableParameters,
GridRectangle ControlBounds,
GridRectangle MappedBounds)
{
//Find the dimensions of the grid
MappingGridVector2[] mappings;
float MappedWidth = (float)MappedBounds.Width;
float MappedHeight = (float)MappedBounds.Height;
int gridWidth = System.Convert.ToInt32(transform.fixedParameters[2] + 1.0);
int gridHeight = System.Convert.ToInt32(transform.fixedParameters[1] + 1.0);
double NumPts = gridHeight * gridWidth;
mappings = new MappingGridVector2[gridWidth * gridHeight];
GridVector2[] Points = new GridVector2[System.Convert.ToInt32(NumPts)];
int iPoints = iVariableParameters + 2;
for (int i = 0; i < NumPts; i++)
{
Points[i].X = transform.variableParameters[i*2] * pixelSpacing;
Points[i].Y = transform.variableParameters[(i * 2) + 1] * pixelSpacing;
}
for (int y = 0; y < gridHeight; y++)
{
int iYOffset = y * gridWidth;
for (int x = 0; x < gridWidth; x++)
{
int i = x + iYOffset;
GridVector2 controlPoint = Points[i];
GridVector2 mappedPoint = GridTransform.CoordinateFromGridPos(x, y, gridWidth, gridHeight, MappedWidth, MappedHeight);
mappings[i] = new MappingGridVector2(controlPoint, mappedPoint);
}
}
return new GridTransform(mappings, MappedBounds, gridWidth, gridHeight, info);
}
/// <summary>
/// This code was reverse engineered from original stos polynomial transform source
/// </summary>
/// <param name="parts"></param>
/// <param name="pixelSpacing"></param>
/// <param name="iFixedParameters"></param>
/// <param name="iVariableParameters"></param>
/// <param name="MappedBounds"></param>
/// <returns></returns>
public static List<MappingGridVector2> ParsePolyTransform(TransformParameters transform , float pixelSpacing, int iFixedParameters, int iVariableParameters, GridRectangle MappedBounds)
{
if (transform == null)
throw new ArgumentNullException();
List<MappingGridVector2> mappings = new List<MappingGridVector2>();
float MappedWidth = (float)MappedBounds.Width;
float MappedHeight = (float)MappedBounds.Height;
int numParams = transform.variableParameters.Length;
double uc = transform.fixedParameters[0];
double vc = transform.fixedParameters[1];
double xmax = transform.fixedParameters[2];
double ymax = transform.fixedParameters[3];
uc = xmax / 2.0;
vc = ymax / 2.0;
int gridHeight = 5;
int gridWidth = 5;
int NumPts = (int)(gridHeight * gridWidth);
GridVector2[] Points = new GridVector2[NumPts];
for (int iY = 0; iY < gridHeight; iY++)
{
for (int iX = 0; iX < gridWidth; iX++)
{
double u = (xmax / (double)(gridWidth-1)) * (double)iX;
double v = (ymax / (double)(gridHeight-1)) * (double)iY;
double A = (u - uc) / xmax;
double B = (v - vc) / ymax;
//For some reason I am off by a factor of two:
A *= 2;
B *= 2;
double[] P = new double[Dimensions + 1];
double[] Q = new double[Dimensions + 1];
for (int i = 0; i <= Dimensions; i++)
{
P[i] = Legendre.P[i](A);
Q[i] = Legendre.P[i](B);
}
double Sa = 0.0;
double Sb = 0.0;
for (int i = 0; i <= Dimensions; i++)
{
for (int j = 0; j <= i; j++)
{
int k = i - j;
double PjQk = P[j] * Q[k];
Sa += transform.variableParameters[index_a(j, k)] * PjQk;
Sb += transform.variableParameters[index_b(j, k)] * PjQk;
}
}
Points[(iY * gridWidth) + iX] = new GridVector2((xmax * Sa * pixelSpacing), (ymax * Sb * pixelSpacing));
}
}
for (int y = 0; y < gridHeight; y++)
{
for (int x = 0; x < gridWidth; x++)
{
int i = x + (y * gridWidth);
GridVector2 controlPoint = Points[i];
GridVector2 mappedPoint = GridTransform.CoordinateFromGridPos(x, y, gridWidth, gridHeight, MappedWidth, MappedHeight);
mappings.Add(new MappingGridVector2(controlPoint, mappedPoint));
}
}
return mappings;
}